1 files changed, 53 insertions, 0 deletions
diff --git a/accel-pppd/vlan-mon/vlan_mon.c b/accel-pppd/vlan-mon/vlan_mon.c
index 898d7dcd..7f15aa06 100644
--- a/accel-pppd/vlan-mon/vlan_mon.c
+++ b/accel-pppd/vlan-mon/vlan_mon.c
@@ -305,6 +305,59 @@ int __export make_vlan_name(const char *pattern, const char *parent, int svid, i
 	return 0;
 }
 
+int __export parse_vlan_mon(const char *opt, long *mask)
+{
+	char *ptr, *ptr2;
+	int vid, vid2;
+
+	ptr = strchr(opt, ',');
+	if (!ptr)
+		ptr = strchr(opt, 0);
+
+	if (*ptr == ',')
+		memset(mask, 0xff, 4096/8);
+	else if (*ptr == 0) {
+		memset(mask, 0, 4096/8);
+		return 0;
+	} else
+		goto out_err;
+
+	while (1) {
+		vid = strtol(ptr + 1, &ptr2, 10);
+		if (vid <= 0 || vid >= 4096) {
+			log_error("vlan-mon=%s: invalid vlan %i\n", opt, vid);
+			return -1;
+		}
+
+		if (*ptr2 == '-') {
+			vid2 = strtol(ptr2 + 1, &ptr2, 10);
+			if (vid2 <= 0 || vid2 >= 4096) {
+				log_error("vlan-mon=%s: invalid vlan %i\n", opt, vid2);
+				return -1;
+			}
+
+			for (; vid < vid2; vid++)
+				mask[vid / (8*sizeof(long))] &= ~(1lu << (vid % (8*sizeof(long))));
+		}
+
+		mask[vid / (8*sizeof(long))] &= ~(1lu << (vid % (8*sizeof(long))));
+
+		if (*ptr2 == 0)
+			break;
+
+		if (*ptr2 != ',')
+			goto out_err;
+
+		ptr = ptr2;
+	}
+
+	return 0;
+
+out_err:
+	log_error("vlan-mon=%s: failed to parse\n", opt);
+	return -1;
+}
+
 
 static void vlan_mon_mc_close(struct triton_context_t *ctx)
 {